package constructor;

public class Test {
    public static void main(String[] args)
    {
        Student s1 = new Student();
        Student s2 = new Student("gxz",19);

        Student s3 = new Student("abc",22,'男');
        System.out.println(s3.name);
        System.out.println(s3.age);
        System.out.println(s3.sex);

    }
}
